Chemical Engineering
Q A mineral is termed as ‘ore’, if ____________________?
  • A A. A metal can be economically extracted from it
  • B B. It contains ≥ 40% metal
  • C C. The metal present in it is costly
  • D D. All a , b. and c.
Previous Na2CO3 is called _________________?
Next Fourdrinier machine is used in the manufacture of _____…
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